{"id":"CVE-2020-16877","aliases":["EUVD-2020-8835","GHSA-m26m-f94h-984c"],"status":"published","title":"Windows Elevation of Privilege Vulnerability","description":"\u003cp\u003eAn elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points. An attacker who successfully exploited this vulnerability could overwrite or delete a targeted file that would normally require elevated permissions.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and overwrite or delete files.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Windows handles reparse points.\u003c/p\u003e","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:P/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00958,"percentile":0.61751,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2020-10-16T22:17:34Z","modified":"2026-06-17T02:58:10Z","products":[{"vendor":"microsoft","product":"windows 10 version 1903 for 32-bit systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for arm64-based systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for x64-based systems"},{"vendor":"microsoft","product":"windows 10 version 1909"},{"vendor":"microsoft","product":"windows 10 version 2004"},{"vendor":"microsoft","product":"windows server version 2004"},{"vendor":"microsoft","product":"windows server, version 1903 (server core installation)"},{"vendor":"microsoft","product":"windows server, version 1909 (server core installation)"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_server_2016"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16877","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-16877"},{"url":"https://github.com/advisories/GHSA-m26m-f94h-984c"}],"sources":{"cve":[{"id":"CVE-2020-16877","title":"Windows Elevation of Privilege Vulnerability","description":"\u003cp\u003eAn elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points. An attacker who successfully exploited this vulnerability could overwrite or delete a targeted file that would normally require elevated permissions.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and overwrite or delete files.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Windows handles reparse points.\u003c/p\u003e","status":"published","published":"2020-10-16T22:17:34Z","modified":"2024-11-18T16:01:34.987Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:P/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:35:58.787905Z"}],"euvd":[{"id":"EUVD-2020-8835","description":"\u003cp\u003eAn elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points. An attacker who successfully exploited this vulnerability could overwrite or delete a targeted file that would normally require elevated permissions.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and overwrite or delete files.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Windows handles reparse points.\u003c/p\u003e","status":"published","published":"2020-10-16T22:17:34Z","modified":"2024-11-18T16:01:34Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:P/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T00:04:57.054288Z"}],"ghsa":[{"id":"GHSA-m26m-f94h-984c","title":"An elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse...","description":"An elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points, aka 'Windows Elevation of Privilege Vulnerability'.","status":"published","published":"2022-05-24T17:30:54Z","modified":"2024-01-09T05:05:04Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:55:21.919096Z"}],"nvd":[{"id":"CVE-2020-16877","description":"\u003cp\u003eAn elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points. An attacker who successfully exploited this vulnerability could overwrite or delete a targeted file that would normally require elevated permissions.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and overwrite or delete files.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Windows handles reparse points.\u003c/p\u003e","status":"published","published":"2020-10-16T23:15:12.697Z","modified":"2026-06-17T02:58:10.91Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":3.6,"vector":"AV:L/AC:L/Au:N/C:N/I:P/A:P","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T14:06:19.351389Z"}]}}